E1000_PCS_ANADV
anadv_reg = rd32(E1000_PCS_ANADV);
wr32(E1000_PCS_ANADV, anadv_reg);
pcs_adv_reg = rd32(E1000_PCS_ANADV);
regs_buff[50] = rd32(E1000_PCS_ANADV);